Aliens vs Predator is a first-person shooter developed by Rebellion Developments and published by Sega. In the mission Refinery for the alien, the player will have to escape the refinery and the mines and kill the soldiers and workers remaining in the buildings.

1. Move forward and harvest the two workers. Open the second door on the left and enter the vent indicated on your screen.
2. You will end up in a room with several soldiers. Get on the ceiling and start by killing the two soldiers on the platform. The height will assure you safety but be quick. Head back on the ceiling and kill the three remainibg soldiers. Harvest the two workers and open the door marked on your screen.
3. You will see a worker escaping. Follow him, let him open the door in the hangar and enter the control room. On the left of the room, there is a passage hidden behind boxes. Hit them to clear the way and enter.
4. An alien will be killed in front of your eyes because of the strong wind coming from under. To reach the bottom, you will have to travel from vent to vent using the Focus button and jumping. After few jumps, you will reach the bottom.
5. On one side, there are two gun turrets, so take the opposite. On your left, you will notice more turrets. Head straight behind the machine and harvest the worker. There are three soldiers around. Hiss and get on the ceiling. Jump behind them when they don't see you and kill them silently. Follow the path and kil the soldiers on the way. Harvest any workers you see.
6. Finally, you will find a power box on the wall. Hit it to open the door to the outside. Exit the mines to clear the mission.